Barbara Billingsley

Damian Dovarganes / Associated Press

Jerry Mathers, left, Barbara Billingsley and Tony Dow reunite for a "Good Morning America" segment in 2007 to talk about the 50th anniversary of "Leave It to Beaver," which was celebrated on cable channel TV Land with a 24-hour marathon.

Jerry Mathers, left, Barbara Billingsley and Tony Dow reunite for a "Good Morning America" segment in 2007 to talk about the 50th anniversary of "Leave It to Beaver," which was celebrated on cable channel TV Land with a 24-hour marathon. (Damian Dovarganes / Associated Press)

Jerry Mathers, left, Barbara Billingsley and Tony Dow reunite for a "Good Morning America" segment in 2007 to talk about the 50th anniversary of "Leave It to Beaver," which was celebrated on cable channel TV Land with a 24-hour marathon.